{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Disease", "Chemical"], "input": "The present data indicate that the determination of malondialdehyde , oxypurines , and nucleosides in peripheral blood , may be used to monitor the metabolic alterations of tissues occurring during ischemic phenomena . ( ABSTRACT TRUNCATED AT 250 WORDS )"}
{"Disease": ["ischemic"], "Chemical": ["malondialdehyde", "oxypurines", "nucleosides"]}